A year or so ago I bought a 45-70 prohunter barrel . I never did shoot it. I thought about selling it, but never did that either. So I finally talked to Ronnald at SMI . He wants a $150.00 to convert it by putting a breechplug in it . I think I will go that route. The encore barrel is a 1:20 twist so it should make a good conical shooter and I would have the option of using smokeless if I so desired. I have some bullets in mind but don't know how long it takes to get it back once I send it in so it may be a while before a range report.